The answer is the sentence number 10. remember that ethos is characterized by the spirit of the culture. its manifestations and beliefs. sentence 10 fully described how long ACME works, and the culture or what it aims for 250 years, thus sentence 10 best describes ethos.
There is a pdf found on the web. I recommend you to simply type in the name of the book and the author. You will get a lot of results but you simply have to filter the ones that will be useful to you. Use google, in my opinion it is the best search engine. There is yahoo and bing.
I hope it helps, Regards.<span />
"I wrote extra r's at the end of roarrr to show the sound the lion made" is the sentence that correctly forms the plural of the letter "r". This is almost always done with apostrophes.
No it is a fragment sentence.